Tube connection



Dc. 9, 1947. ,.l. L. BRADFlr-:LD

TUBE CONNECTION Filed Aug. v6, 1945 Z/-vz/E/v rafa, JOSEPH /Mof/Ew, EYAM H7-:Tamm x Patented Dec. 9, 1947 UNITED STATES PATENT OFFICE TUBECONNECTION Application August 6, 1945, Serial No. 609,191

7 Claims. (Cl. 285-105) This invention relates to lateral flow tubingconnections with main supply and return lines particularly adapted foruse in radiant heating installations where the lines are embedded androom for cross connections is exceedingly limited.

A primary object of the invention is to provide a connecting structureof the type indicated which may be preformed on suitable main flow linetubes or pipes and supplied to the public ready for connections with thelateral flow lines. Another primary object of the invention is toprovide side outlets in a main flow pipe or tube wherein the outlets aredisposed out of the main flow channel through the pipe or tube in suchmanner that a fore bay is formed within the pipe or tube at the entranceto the side connecting tube.

A still further important object of the invention is to provide amechanical structure wherein the cross connecting tube mechanicallypasses through the main supply or return tube to be supported thereby insuch manner that the cross tube may be welded, brazed, sold-ered, or thelike to the main pipe or tube to leave lengths of the cross tube exposedfor connection with the lateral flow lines.

These and many other important objects and advantages of the invention,including the` extremely simplified construction with a maximum possiblestructural strength will become apparent to those versed in the art inthe following description of one particular form of the invention asillustrated in the accompanying drawing, in which Fig. 1 is a top planView of a structure embodying the invention;

Fig. 2, a view in side elevation;

Fig. 3, a bottom plan View on an enlarged scale of a single connection;

Fig. 4, a longitudinal central section on the line 4 4 in Fig. l, on anenlarged scale; and

Fig. 5, a transverse vertical section on the line 5 5 in Fig. 2, also onan enlarged scale.

Like characters of reference indicate like parts throughout the severalviews in the drawing.

While the invention is not to be limited thereto, it nds an immediateand extremely satisfactory use in radiant heat installations whereinthere are ilow and return pipes embedded in the ceilings, walls or evenoors, particularly in the plaster or cement thereof, and to which pipesare connected lateral flow pipes to provide for circulation of warmwater from the flow pipe to the return pipe. The invention isparticularly adapted to such use in that the vertical height of theembodiment thereoi:` permits the embedment indicated. Furthermore, theentire installation may be made particularly in the embedded portionswithout screw or compression ttings, all to the end that leaks areavoided.

Referring to the drawing, a tube I8, which may be either a supply orreturn line, is preferably made out of a ductile material, such ascopper. This tube Il! is formed to have a plurality of under sideprotruding bays I I, spaced one from the other at the predetermineddistances required for the spacing apart of lateral flow lines. In theparticular form herein shown, each bay Il is formed by drawing thecopper tube IE) to have substantially parallel walls I2 and I3 with adoor I4 interconnecting the lower ends of those walls to have agenerally rectangular section across the floor of the bay. The ends ofthe floor I4 curve upwardly and merge into the tube I as best indicatedin Fig. 3.

This formation may be readily produced by providing a suitable die tocarry the tube ID and by forcing a fluid under high pressure in the tubeI0 to flow the tube into the cavities provided in the die shaped todefine the bays I I, this method being suggested to show the simplicityof the formation without having to employ any complicated methods orsystems to produce the structure desired. In any event, as aboveindicated, the walls forming the bay I l in each instance are integralparts of the wall of the tube Ill. Preferably the floor I4 is arcuate inlongitudinal section, Fig. 4, and at the lowermost portion of the oor,the floor is further deformed to provide the arcuate section I5 to havea curvature conforming to the outside diameter of a cross tube I6 whichis positioned thereacross by inserting it through holes I'I and I8 boredthrough the side walls I2 and I3 to slidingly receive the tube I6therethrough.

The tube IB is of that length which will provide a length on either sideof the tube I0 sumcient for interconnection with a cross flow line (notshown). This tube I5 is cut through across its central portion for atleast half its diameter and preferably a little more, Fig. 5, to leave aconnecting section I9 between the two outer end portions 20 and 2l, Fig.5. As indicated in Fig. 4, the section I9 has its side upper edges 22and 23 substantially at the elevation of the upper side of the floor I4on either side thereof so that any ow down around the floor I4 fromeither side may be had directly over the edges 22 and 23 without anyobstruction thereby.

With the tube I6 positioned to extend through the bay II with its cutaway portion therewithin positioned as indicated in Figs. 4 and 5, thetube the brazing prevents longitudinal displacement of the tube i6. Thefloor lli extends downwardly suil'ciently in respect to the wall of theYtube lil to position the tube I6 to have its longitudinal axis at leastas low as the inside face pf thefwall of the tube lil. This permitsunobstructed V:dow f through the tube l0 and yet by reason of .the

depressing of the tube ID to form the bay 1.1

there is Ia head or fore bay had which insures an adequate flow of thefluid from the pipe Lil into the cross tube I6 with the minimumresistance thereto. j-By reason of this construction, a 7 quiet Idow ofthe lfluid `from the tube lil into Irthe .cross tube l may be had toavoid .a murmuring :or rippling sound which might otherwise `be set up.

While I have Ylr-ierein shown and -described my inyentionjin the oneparticular dorm, it is lobvious that structural changes rmay be employed4 and diierent materials may be used, all without departing from thespirit .off the invention, and I .therefore do not desire ,to :belimited vto that precise form beyond the Inuit-nms as may be tm- .posediby the following Claims.

I claim:

l. For Q Qnnectinegflateral flow rines with a :prii- :ilow rire, alength of lateral flow eine.: a bay for-ined in :the primary jilow pipehaying Aside Wal-1,5 each with fan opening therethrough 4opposite theother of a diameter tc receive slidingly therethrough said lateral kElowpipe; Ya goor `loethw'eenlsaid side-walls havin-g a central, outwardlybowed trough Aacross and in which said lateral pipe yis seated, Vsaiddoor from each side of said -trugh inwardly and rorreitely -there'r-'Qmte merge into the wall of said primary pipe; said trough being'locatedto carr-y said iateral pipe to have its `long-iinidinal axis vatleast as ,tar frein the primary pipe axis as the ,inside iace -of thewall Of -theprini-ary pipe; and said lateral pipe having its aideportion between .Said side walls :Cut away opening :into that :lateralVrire imm said 'hay' 2. A primar-y -ow pipe bulged .outwardly .on onelside J70 provide a .bay internally thereolflsubstantially fully offset`from the 1bore lof `the pipe; alaterajlflow pipe carried through tthepipe bulge across 'the outermost lportion of its Yi-nner giace,transversely of the primary pipe, .and opening from its side into saidbay, the longitudinal length o frthe k,bay*exceeding the diameter ofsaid lateral 131.10-

3. A primary now pipe -bulged outwardly on one `side to vprovide a :bayinternally thereof substantially tully offset from the bore of the pipe;a lateral flow 4pipe ycarried through :the pipe bu-ige across .theoutermost portion ,of its inner face, transversely of .the .primarypipe, A-and .opening from its sideinto saidbay, the .longitudinal lengthof thefbay exceeding the diameterpf said lateral' pipe; said pipe-bulged portion .having ya trough thereacross in said giace yreceivingtherein that circumferential portion of said lateral pipeextending fromedge to edge of saidopening thereof.

4. {Ijhe combination Aoi a primary flow ypipe; an outwardly extendinglbulge on the pipe defined by side walls and an interconnecting oor toform a bay internally of and offset from the bore of the pipe; asecondary pipe extending through said side walls and internally acrosssaid iloor, said secondary pipe having an opening therefrom between saidwalls throughout substantially half its Vcircnnnierence; and said -floorsloping from opposite side edges 0f Said opening i0 merge into the wallof said primary pipe; whereby uid within the primary pipe may firstenter an enlarged portion of that pipe as dened by said bay, and fromthat bay ow into said secondary pipe.

5.. The combination of a primary flow pipe; an outwardly extending bulgeon the pipe defined by Aside walls .and Ian interconnecting iloor toform a bay internally of and offset from the bore of the pipe; asecondary pipe extending through said sidewalls and internally acrosssaid floor, said secendary pipe having an opening therefrom between saidwalls throughout substantially half its circumference; and said floorsloping from opposite I.side Aedges of said opening to merge into the of said primary pipe; whereby fluid within the primary .pipe may lirstenter an enlarged portion of xtllat pipe asl defined by said bay, andfrom that ybay .flow into said secondary pipe; said floor hal/mg adepression thereacross receiving 4therein the lside 1osaid secondarypipe opposite its said @pagina The `c o,z nbinatio n of va primary ilowpipe; an outwardly extending bulge on the v.pipe defined by side wallsand an interconnecting floor Lto form a bay internally of and yOset fromthe bore of the pipe; a vsecondary pipe extending ,through said sidewalls and 'internally Y*across said licor, said secondary pipe having anopening therefrom ber tween said walls `throughout substantially halfits circumference; vand said noo-r sloping from opposite side Aedges of`said opening to merge into the walloisfid primary pipe; whereby fluidwithin the prilnavry'pipe lmay ilrslt enter an .enlarged portion of thatpipe as defined by said bay, and from that bay flow into Said secondarypipe; .said bay ,being substantially rectangular in cross-section atright rangles to the axis of said pri-mary 91p?.

k7. rjlijhe `combination of Va primary flow pipe; an ontwardly extendingbulge on the Apipe -defined byside walls and an interconnecting oor to.form a ',bvay internally of .and :onset from the vbore of thejpipe;gasecondary pipe extending through said side walls and internally acrosssaid iloor, said seeqngdary pipehaving an opening therefrom between saidwalls throughout substantially lmlf its circumference; and said floorsloping from Aopposite lside edges of said opening to merge into thewall or' said primary pipe; whereby fluid within .the Primary 4pipe ymaylrst l.enter an enlarged portion of Athat pipe as de ned by said bay,and frein that bay 130W im@ saidsecondary pipe; said floor having@ddepression thereacross receiving therein .the aide ,0f Said secondarypipe vopposite its said 4c gpening; and said floor being arcuate in formcentrally interrupted by said depression.

vvJOSEPH L. BRADFIELD.

:REFERENCES CITED The following references are of record inthe .file 91his Relient?

